Third, gender is related to mental illness but in complex ways, as the nature of this relationship depends on the type of mental disorder. Women have higher rates of manic-depressive disorders than men and are more likely to be seriously depressed, but men have higher rates of antisocial personality disorders that lead them to be a threat to others (Kort-Butler, 2009). [41]Although some medical researchers trace these differences to sex-linked biological differences, sociologists attribute them to differences in gender socialization that lead women to keep problems inside themselves while encouraging men to express their problems outwardly, as through violence. To the extent that women have higher levels of depression and other mental health problems, the factors that account for their poorer physical health, including their higher rates of poverty and stress and rates of everyday discrimination, are thought to also account for their poorer mental health (Read & Gorman, 2010). [42]